Design of deformation (thermo-mechanical) processes to achieve desired structural response will be addressed. Plastic deformation is assumed to be accommodated through crystallographic slip and reorientation of crystals. Conventional methodologies towards polycrystal plasticity use an aggregate of single crystals and this choice of the aggregate affects the response of the polycrystal. In order...

This paper presents a simple methodology to perform a high temperature coupled thermo-mechanical test using ultra-high temperature ceramic material specimens (UHTCs), which are equipped with chemical composition gratings sensors (CCGs). The methodology also considers the presence of coupled loading within the response provided by the CCG sensors. The theoretical strain of the UHTCs specimens ca...

Subcalcaneal fat serves as shock absorber and provides cushioning to the underlying foot structures and the body as a whole. Changes in mechanical response of the subcalcaneal fat (i.e., stiffening due to age [1] or diabetes [2]) can compromise the ability to dissipate plantar stress and potentially cause tissue injury. Inverse finite element (FE) analysis has been used to quantify mechanical p...

The ablation of ultra-high-temperature ceramics (UTHCs) is a complex physicochemical process including mechanical behavior, temperature effect, and chemical reactions. In order to realize the structural optimization functional design ultra-high ceramics, coupled thermo-chemomechanical bond-based peridynamics (PD) model proposed based on ZrB2 oxidation kinetics thermomechanical peridy...

In this paper, a robust constitutive model adapted to 3D beam theory in the finite strain regime is proposed simulate thermo-mechanical behaviors of shape memory alloys (SMAs) under triaxial normal-shear loadings. For first time, four internal parameters are considered capture martensitic transformation, orientation/reorientation martensite variants, deformation coupling, and asymmetric/anisotr...

Abstract The collapse of deposited thermoplastic composite material under self-weight presents a risk in large-format extrusion-based additive manufacturing. Two critical processing parameters, extrusion temperature and deposition rate, govern whether layer is stable bonds properly with the previously layer. Currently, parameters are determined via trial-and-error approach. This research work u...